package com.blb.exam.common.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 编码过滤器
 */
@WebFilter({"*.do"})
public class EncodingFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //设置请求和响应的编码
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
//        response.setContentType("text/html;charset=UTF-8");
        System.out.println("设置编码：" + request.getRequestURL());
        //放行
        filterChain.doFilter(request,response);
    }

    @Override
    public void destroy() {

    }
}
